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Some innovative results are listed below:1、According to the lithologic characters,lithofacies,genetic classification and the geomorphy,the Quaternary system is divided into piedmont-gully\'s and plain\'s. The piedmont-gully\'s Quaternary sediment,which is about 3~20 meters in thick,is in the western hills of the study area.The plain\'s Quaternary sediment is widely distributed in the study area,which is about 30~60meters thick and become thicker from southwest to northeast.2、The Quaternary sediments of plain can be divided into five sedimentary cycles.The Late Pleistocene series Quantan group,at the bottom of the Quaternary System,is constituted by a fluvial facies-river and lake facies sedimentary cycle. The Late Pleistocene series Jiashan group,at the middle of the Quaternary sediment, is constituted by two fluvial facies-neritic facies-river and lake facies sedimentary cycles.The Holocene series Binhai group,at the upper of the Quaternary sediment, is divided into three parts,the under layer and middle layer are constituted by two littoral facies-river and lake facies sedimentary cycles,the upper layer is constituted by paludal facies,which was deposited at the lower-lying land like West Lake, Jiangcun-Gu dang,Xianghu lake,and coastal-estuary facies in other area.3、Folding and fault activities were weak in Quaternary and the tectonic activity had little influence on the Quaternary sedimentation.The ancient landforms,the evolvement of the river system and transgression were the main elements which controlled the Quaternary sedimentation in Hangzhou.The ancient landforms formed the basis of the Quaternary sedimentation.The evolvement of the river system and transgression individually or jointly controlled the Quaternary sedimentation of this area.4、The alternation of the climate was the main reason for the evolvement of the river systems and transgression,and it\'s also the reason why the Quaternary system of Hangzhou has the special sedimentary structure which is called soft interbed with hard layers.
通过研究取得了以下成果:1、根据岩性、岩相、成因类型和地貌特点,将本区第四系划分为山麓沟谷区沉积和平原区沉积:山麓沟谷区第四系主要分布于西部丘陵地区,厚度较薄且变幅大,一般厚3~20m;平原区第四系广布分区,由南西向北东逐渐增厚,一般厚30~60m.2、平原区第四系自下而上大体由五个完整或不完整的沉积旋回构成:底部上更新统全塘组,由河流相—河湖相的沉积旋回构成;中部上更新统嘉善组,由河流相—浅海相—河湖相两个沉积旋回构成;上部全新统滨海组,其下中两段由滨海海湾相—河湖相的两个沉积旋回构成,上段由西湖、蒋村—古荡、湘湖等低洼处沉积的湖沼相和其他地区沉积的滨海河口相构成。3、第四纪以来,研究区内褶皱、断裂活动微弱,构造运动对第四系沉积的影响不大,古地形、古水系的发育、变迁和海侵是杭州市第四系沉积的主要控制因素:古地形构成了第四系沉积的基底,水系与海侵在其后的不同阶段或分别或联合的主导了区内的第四系沉积。4、水系的发育、变迁和海侵的共同原因是天气变化,正是由于第四纪以来"冷热交替"的天气特点形成了杭州市第四系"软硬互层"的特殊沉积结构。
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The pediment may have been extended through out all Longzhong Basin, and the pediment as the control face of evolution of landform and water area in modem Basin.
可能表明六盘山西侧广泛发育一个山麓剥蚀面,并且这个山麓剥蚀而可能贯通至整个陇中盆地,是现代盆地地貌和水系演化的控制面。
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At last , this paper discusses reservoir characteristics in development period and suggests some theoretical ideas as well as techniques, major works is follow :(1) The combines of sequence stratigraphy , the flatten techniques of 3D seismic interpretation with 3D visualization , the paleotopography and river system in studied area are reconstructed and its controlling to developing of karst fracture and vug carbonate is analyzed , the affects of different paleo-domain unit on developing degree of reservoir storage space are presented .
在理论研究、技术方法方面作了一些建设性的工作,主要包括:(1)利用层序地层学原理、3D地震资料层拉平技术与三维可视化技术相结合方法,初步勾绘了古地貌的基本轮廓,研究了岩溶古地貌、古水系对岩溶缝洞碳酸盐岩储层的控制作用,分析了地貌单元对储层储集空间发育程度的影响。
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Under coaction of endogenic geological processes and water and heat conditions, the drainage development, and water formation and transformation in the inland watershed. were indicated hydrological characteristics of periglacial zone. The hydrological process is mainly related with to changes in mountain areas. It by 41% of precipitation in mountain areas as surface discharge flows into middle and lower reaches, which makes up a main physical basis of the quantitative and qualitative relationship for various functional units in the eco-system in mountain front plain.
在内动力地质、水热条件的共同作用下,内陆河流域上游山区的水系发育、水的形成和转化反映出冰缘带水文学特征,水文过程主要和气候变化相关联,山区降水总量的41%以地表径流形式输入中下游地区,构成山前平原生态系统各功能单元数量与质量关系的主要物质基础。
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Three Gorges area river system fractal dimension value D=1.7239, which indicate that the geomorphy of Three Gorges area is on the mature stage, and river system growth completely.
三峡地区水系分维值D=1.7239,表明三峡地区地貌处于侵蚀发育的壮年期,河网较发育,水系发育的较为完全。
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For river networks ,its growth subjects are notably influenced by climate,geotectonic movement,and mankind actions.
水系的发育受气候、构造运动和人类活动的显著影响,构造运动状况的差异必然反映在水系特征上。
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The local factors such as topography, vegetations and soil moisture contents, have great influences on the distribution, ground temperatures, and ground ice contents of permafrost. About 50 km of wetlands have been identified along the China-Russia crude oil pipeline route. In these segments, the surficial deposits consist of peat and humic layers on the top of thick ground-ice, or ice-rich permafrost. The frozen ground engineering geology conditions in wetlands generally are the worst for building and operating the pipeline. The hazardous periglacial processes, such as the widespreadpresence of pingos, icings and frost mounds due to the extensive occurrence of the frost-susceptible soils and ample supplies of surface and ground waters in winter pose significant threats on pipeline operation.
地形地貌单元、植被分布、地表水分条件的变化等局部因素对多年冻土的分布和地下冰的赋存产生重要的影响,管道沿线大约分布有50 km左右的沼泽湿地,其表层为腐殖质土及泥炭层,泥炭层下面分布着含土冰层或地下冰,是管道沿线最差的冻土工程地质地段;由于中俄原油管道沿线水系发育多,冻胀丘、冰椎和冰幔等不良冻土现象广泛分布。
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5Oil and gas were controlled by the structure formed by superposition of tectonic movement in the early and late Hercynian which resulted in palaeogeomorphology and degree of fracture growing. The latter decided the flowing direction of palaeocurrent and the degree of corrosion,which is the main factors of karstification.Especially,the superimposition of palaeostructure and Akekule uplift is the most favorable area for karst and fracture growing.The ubiquitous high angle fracture made all kinds of vugs into a large scale storage,so the fracture-vug system was divided into some blocks in the main oil zone on the plane.
5塔河油田的油气分布受控于海西早、晚期构造运动叠加形成的构造格架,古构造叠加的结果控制了古地貌和裂缝发育强度,古地貌和裂缝发育强度控制了古水系的流动方向及溶蚀深度,它们是岩溶作用发育的主控因素,特别是海西晚期形成的古构造与阿克库勒凸起轴部的叠合部位是岩溶、裂缝最发育的地区,普遍存在的高角度裂缝在三维空间将各类岩溶孔洞连通为大规模的储集体,从而造成主油区大型缝洞系统横向上的分区性。
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For metallogenic environments, the neotectonic movement and climate are 2 most important factors. The neotectonic movement controlled the exposure, weathering and migration of primary provenance, the formation of valleys, the evolution of river systems and topography, and etc. The climate factor played important roles in the whole history of gold placers, especially in the formation of secondary provenance, the sorting and concentration of placer gold, the conservation and regeneration of gold placers, and etc.
在成矿环境方面,新构造运动对砂金矿的形成演化具有重要控制作用,主要表现在促使原生源暴露地表、风化、迁移,控制河谷的发育、水系与地貌的变迁等;气候因素贯穿于砂金成矿全过程,尤其在次生物源的形成、砂金的分选、富集、保存、&再生&等方面发挥重要作用。
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In the light of the theory on modern river system capture, it had been south- confluence structure in the east of Block 4, Tahe Oilfield. Then, the base level of erosion had declined in the northwest, and the north border of south-confluence drainage basin was captured by underground way, so the inverted river was builtup.
借鉴现代水系袭夺理论,证实了塔河油田四区东部岩溶流域早期为南向汇流结构,而后期由于构造运动引起西北部侵蚀基准面下降,并通过地下途径对邻近南向流域北缘进行逐步袭夺,形成了大型倒淌河,再现了本区岩溶古水系及流域的阶段性演化过程,从而为揭示塔河油田奥陶系古岩溶发育规律提供了重要的依据。
- 更多网络解释与水系发育的相关的网络解释 [注:此内容来源于网络,仅供参考]
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braided stream:辫状河
[11][12] , 辫状河(braided stream) 河流纵横交错,形似鱼网的水系.常出现在土质疏松的河漫滩和河流三角洲上.河道易淤易冲,变化频繁.如广东省珠江三角洲上发育的这种水系.
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undrained:水系不发育的
UNDP 联合国开发计划署 | undrained 水系不发育的 | undrawn yarn 未拉伸丝
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undrawn yarn:未拉伸丝
undrained 水系不发育的 | undrawn yarn 未拉伸丝 | undrillable 不能钻的
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well-drained:水系发育的;排水良好的
well-defined 意义明确的 | well-drained 水系发育的;排水良好的 | well-established 非常确实的